- Category:
- SCM
- Tags:
-
[Text]
- File Size:
- 3kb
- Update:
- 2015-04-14
- Downloads:
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- Uploaded by:
- 蓝色风
Description: SCM (stc89c52) via RS485 communication with the PLC, using modbus protocol, using SCM idle a pin high or low, to determine the circumstances microcontroller program execution occurs. Relatively simple hardware connection, the microcontroller 485 A/B terminal is connected to the RS485/RS422 through, RS422 connection but PLC. This is not a project file .c program he established a keilC project after downloading it.
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danpianjiyu-PLC.txt
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